field	summary_types
-----	-------------
total_bytes_downloaded	email_in email_sina local regular_miss
total_bytes_email_downloaded	email_in email_sina
total_bytes_email_sent	email_out
total_bytes_internal_web_downloaded	local
total_bytes_external_web_downloaded	regular_miss
total_requests	email_in_no email_sina_no local_reqs regular_miss_reqs
total_email_requests	email_in_no email_sina_no email_out_no
total_number_of_emails_received	email_in_no email_sina_no
total_number_of_emails_sent	email_out_no
total_number_of_emails_remote	email_in_no
total_number_of_emails_local	email_sina_no
total_internal_web_requests	local_reqs
total_external_web_requests	regular_miss_reqs